I have a question regarding how radio signal jammers work and I'm wondering whether it's more suited to 'Electrical Engineering' or 'Physics'.
My question is as follows:
I understand that radio signal jammers, such as that used to block the signal from an explosives detonator, work by emitting a broad spectrum of powerful radiowaves to drown out those from potential threats. I've also heard that sensitive or poorly built radio triggers are known to have been activated by signals emmited by devices other than that of the intended trigger, such as the signals from police radios. What I am wondering is, with that in mind, what stops the signals from the jammer activating the device?